W DOC AIRBUS | AMM A320F

General Visual Inspection of Water Injector Nozzles for Erosion

TASK 21-52-00-200-012-A
General Visual Inspection of Water Injector Nozzles for Erosion

FIN: 20HM
FIN: 21HM
1. Reason for the Job
Refer to the MPD TASK: 215242-01
GENERAL VISUAL INSPECTION OF WATER INJECTOR NOZZLES FOR EROSION.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
FLASHLIGHT
No specific
1
MIRROR - INSPECTION, FLEXIBLE
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Referenced Information
REFERENCE
DESIGNATION
TASK 12-33-21-618-001-A-01
Pre-conditioning through the HP Ground Connection
TASK 12-33-21-618-001-A-02
Pre-conditioning with the APU
TASK 21-52-00-960-001-A
Replacement of the Water Injector Nozzle
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
3. Job Set-up
Subtask 21-52-00-861-064-A
A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 21-52-00-860-056-A
B. Aircraft Maintenance Configuration
   (1) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
   (2) Make sure that the BLEED page is shown on the ECAM lower display unit.
   (3) Make sure that the PACK 1 and the PACK 2 pushbutton switches on the AIR COND panel 30VU are in the ON position.
Subtask 21-52-00-618-052-A
C. Do the pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001) or through the HP ground connection (Ref. AMM TASK 12-33-21-618-001).
4. Procedure
Subtask 21-52-00-210-059-A
A. Visual Inspection
WARNING: BE CAREFUL WHEN YOU DO THIS CLEANING PROCEDURE. A VERY STRONG HOT OR COLD AIRFLOW WILL OCCUR IN THE AREA OF THE PACK BAY. THIS AIRFLOW CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING: MAKE SURE THAT THERE ARE NO PERSONS OR EQUIPMENT NEAR THE RAM AIR OUTLET FLAPS. MOVEMENT OF THE RAM AIR OUTLET FLAPS AND HOT EXHAUST GASES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
CAUTION: MAKE SURE THAT THE AREA NEAR THE RAM AIR INLET IS CLEAN AND FREE FROM LOOSE ARTICLES. LOOSE ARTICLES CAN GO INTO THE RAM AIR INLET AND CAUSE DAMAGE TO EQUIPMENT.
   (1) Use a FLASHLIGHT and and examine the spray pattern.
     (a) The spray pattern must be regular.
   (2) If the spray pattern is irregular, replace the water injector nozzle (Ref. AMM TASK 21-52-00-960-001).
Subtask 21-52-00-860-058-A
B. Aircraft Maintenance Configuration
   (1) Stop the pre-conditioning with the APU (Ref. AMM TASK 12-33-21-618-001) or through the HP ground connection (Ref. AMM TASK 12-33-21-618-001).
Subtask 21-52-00-865-077-A
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 20HM (P1 WATER INJECTOR)
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
** ON A/C NOT FOR ALL
FOR FIN: 21HM (P2 WATER INJECTOR)
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
Subtask 21-52-00-210-060-A
D. Visual Inspection
   (1) Use a FLASHLIGHT and a MIRROR - INSPECTION, FLEXIBLE and examine the water injector nozzle.
     (a) There must be no erosion holes at the hexagonal flange of the water injector nozzle.
   (2) If the water injector nozzle is damaged, replace the water injector nozzle (Ref. AMM TASK 21-52-00-960-001).
5. Close-up
Subtask 21-52-00-865-078-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 20HM (P1 WATER INJECTOR)
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
** ON A/C NOT FOR ALL
FOR FIN: 21HM (P2 WATER INJECTOR)
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
Subtask 21-52-00-860-057-A
B. Aircraft Maintenance Configuration
   (1) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
Subtask 21-52-00-862-062-A
C. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.02 06:11:25 UTC
AVIA BRAIN PRODUCTION 2026